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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 816 · 40 questions
TalentJR

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

NameDateTime takenScore ___ / 40
  1. 1.25% of ₹60 =
  2. 2.Double 25 =
  3. 3.72 ÷ 4 =
  4. 4.47 × 7 =
  5. 5.22 × 8 =
  6. 6.22 × 4 =
  7. 7.You buy a cricket ball for ₹85 and pay with a ₹100 note. How much change do you get, in rupees?
  8. 8.89 + 9 =
  9. 9.21² =
  10. 10.26 + 27 =
  11. 11.23 + 81 =
  12. 12.77 + ? = 100
  13. 13.19 + 9 =
  14. 14.62 − 21 =
  15. 15.96 ÷ 8 =
  16. 16.25% of ₹80 =
  17. 17.77 + 7 =
  18. 18.22² =
  19. 19.88 + 7 =
  20. 20.53 + 25 =
  21. 21.67 + 5 =
  22. 22.15 × 4 =
  23. 23.What is the remainder when 93 is divided by 8?
  24. 24.103 − 92 =
  25. 25.Best estimate of 447 + 366? (a) 800 (b) 600 (c) 1000
  26. 26.Best estimate of 86 × 77? (a) 7200 (b) 72000 (c) 720
  27. 27.71 × 6 =
  28. 28.75 − 58 =
  29. 29.18² =
  30. 30.8 + ? = 10
  31. 31.228 ÷ 6 =
  32. 32.85 + 9 =
  33. 33.21 × 8 =
  34. 34.8 + 10 =
  35. 35.A cricket match starts at 5:35 and the first innings ends at 6:15. How many minutes did the innings last?
  36. 36.A cricket match starts at 3:35 and the first innings ends at 6:15. How many minutes did the innings last?
  37. 37.216 ÷ 8 =
  38. 38.91 × 4 =
  39. 39.21 + 23 =
  40. 40.64 ÷ 4 =

Answer key

  1. 15
  2. 50
  3. 18
  4. 329
  5. 176
  6. 88
  7. 15
  8. 98
  9. 441
  10. 53
  11. 104
  12. 23
  13. 28
  14. 41
  15. 12
  16. 20
  17. 84
  18. 484
  19. 95
  20. 78
  21. 72
  22. 60
  23. 5
  24. 11
  25. 800
  26. 7200
  27. 426
  28. 17
  29. 324
  30. 2
  31. 38
  32. 94
  33. 168
  34. 18
  35. 40
  36. 160
  37. 27
  38. 364
  39. 44
  40. 16

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